Ключевые слова: 2011, athlete, bartko, bicycle, bike, biker, challenge, christian, circle, curve, cycle, endurance, event, fight, finish, grasmann, hall, hallenstadion, indoor, leader, men, nights, performance, proferssional, professional, profi, race, racer, riders, riding, robert, set, shoot, shot, sixday, sixdaynights, speed, sport, start, switzerland, team, track, victory, win, wooden, zrich, zuerich, zurich,